<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{

    private $_id;

    /**
     * Authenticates a user.
     * The example implementation makes sure if the name and password
     * are both 'demo'.
     * In practical applications, this should be changed to authenticate
     * against some persistent user identity storage (e.g. database).
     * @return boolean whether authentication succeeds.
     */
    public function authenticate()
    {
        $name=strtolower($this->username);
        $user=User::model()->find('LOWER(name)=?',array($name));
        if($user===null) {
            $this->errorCode=self::ERROR_name_INVALID;
        } else if(!$user->validatePassword($this->password)) {
            $this->errorCode=self::ERROR_PASSWORD_INVALID;
        } else {
            $this->_id=$user->id;
            $this->username=$user->name;
            $this->errorCode=self::ERROR_NONE;
        }
        return $this->errorCode==self::ERROR_NONE;
    }

    public function getId()
    {
        return $this->_id;
    }
}